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TV partially black screen at startup

 
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johnpmt
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PostPosted: Tue Dec 18, 2007 1:42 pm    Post subject: TV partially black screen at startup Reply with quote

My 21" philips TV at home when switched on, starts with almost half of the screen (bottom half) blacked out. Then the black portion's height gradually reduces and after some hours i get to see a proper screen.
Please let me know that the problem could be.

Thanks
John.
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gary



Joined: 05 Apr 2005
Posts: 584
Location: MANCHESTER, uk

PostPosted: Tue Dec 18, 2007 5:22 pm    Post subject: Reply with quote

REPLACE ELECTROLYTIC CAPACITORS IN FRAME STAGE, WITH AGE THE CAPS FALL IN VALUE. AS THEY WARM UP THE VALUE WILL INCREASE.
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Pilsener



Joined: 18 Dec 2007
Posts: 8

PostPosted: Tue Dec 18, 2007 6:12 pm    Post subject: Reply with quote

Vertical output amplifier may also be faulty. Usually some TDAxxxx chip. Not very expensive thing.
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PostPosted: Sat Jan 19, 2008 9:31 am    Post subject: Reply with quote

Thanks a lot guys. will check it up...

Smile
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